The Prakriti,(The Potential Energy to be known,),of three constituent Dispositions of the Prakriti) called the Gunas.
Purusha, Kinetic Energy that Flows,
Mahat, The Intellect, to translate these,
Ahankara,The Feeling of ‘I, Mine” to be conscious,
Mind,(For the Observer)
Five sensory organs,(For the Observer)
Five Motor organs,(For the Observer)
Five Subtle Elements(For The Observed, The World)
Five Gross Elements(For the Observed)
Let us look at each in brief.
What is to be known, has ‘To Be’
That implies presence.
That presence has to be immanent and be inert, to be activated when to it is to be known or aware of.
This presence is Prakriti or the Principle that is permanent, immanent and inert, awaiting to be known.
This is provided by Purusha, the Kinetic principle that interacts with the Prakriti to generate Intellect,(at the macro level)
Now Prakriti is constituted by the Three Gunas or Dispositions(for details see post Gunas under Indian Philosophy)
This Intellect at the Macro level is Mahat.
Once the Intellect is formed, it is ready to be known, both at the Macro-level and at the individual level.
To be understood, at the Macro-level, the external World has the Following.
Five elements,Earth, Water, Fire, Air and Ether.
These five elements have five subtle elements called Tanmatras.
The Five elements of the external world are gross in nature.
Their qualities are a part of them , like Heat and Light are the qualities of Fire.
We can not experience them as they are.
The qualities embedded in them make us aware of them, like the heat is known by our bodies, light by our eyes.
To sum up, the external world, the’Observed’ has elements that complement the internal organs of the Individual(Observer).
When these connect Awareness or Knowledge dawns.
Put it in another way , the Observed becomes Observer when connected, when the Individual Ego is identified with it.